#include <math.h>
#include <stdio.h>


int main (){
    double (*fnct)();
    fnct=sin;
    printf("sin(3.0) is: %f \n", fnct(3.0));

    fnct=cos;
    printf("cos(3.0) is: %f \n", fnct(3.0));


    
    fnct=sqrt;
    printf("sqrt(3.0) is: %f \n", fnct(3.0));



    return 0;
}
